BLEND_COPY = 0
BLEND_ADD = 1
BLEND_SUB = 2
BLEND_MUL = 3
BLEND_MIN = 4
BLEND_MAX = 5

TRANSPOSE_FORWARD = 90
TRANSPOSE_BACKWARD = -90
TRANSPOSE_OPPOSITE = 180

CHANNEL_1 = 1
CHANNEL_L = 2
CHANNEL_A = 32
CHANNEL_R = 64
CHANNEL_G = 128
CHANNEL_B = 256

HPOINT_TOPLEFT = 0
HPOINT_CENTER = 1

'''
ATTACH_TOPLEFT = 1
ATTACH_TOPCENTER = 2
ATTACH_TOPRIGHT = 3
ATTACH_RIGHTCENTER = 4
ATTACH_CENTER = 5
ATTACH_LEFTCENTER = 6
ATTACH_BOTTOMLEFT = 7
ATTACH_BOTTOCENTER = 8
ATTACH_BOTTORIGHT = 9
'''

#Quadtree
QTREE_NW = 0
QTREE_NE = 1
QTREE_SW = 2
QTREE_SE = 3

CC_SRC0_DST0_H = 0
CC_DST0_SRC0_H = 1
CC_SRC1_DST0_H = 2
CC_DST0_SRC1_H = 3
CC_SRC0_DST1_H = 4
CC_DST1_SRC0_H = 5
CC_SRC1_DST1_H = 6
CC_DST1_SRC1_H = 7
CC_SRC0_DST0_V = 8
CC_DST0_SRC0_V = 9
CC_SRC1_DST0_V = 10
CC_DST0_SRC1_V = 11
CC_SRC0_DST1_V = 12
CC_DST1_SRC0_V = 13
CC_SRC1_DST1_V = 14
CC_DST1_SRC1_V = 15
